Obviously, each bears certain risks, and usually the agent would advise on these topics in the beginning.

Society and demographics favor smaller units since marriage and child bearing are being delayed.  

Clay soils mean that drainage is really important to prevent foundation issues.

Then think your investments need to be tested against a recession or bear market, so likely every 7-12 years. 

At 3% interest you’re bearing both inflation and appreciation from the cost side. 9.  

Honestly, I think the PM bears some responsibility here.

I'm thinking that repairing the plumbing leaks and getting the soil dried out could be a permanent solution.   

A goal of 40 doors is theoretical and likely just matches the income that you want to get to that ranch, but managing 40 doors, especially when they are broken up into 15-20 properties is a bear for you or for property management fees (especially so if they are not all near each other).

Your cleaner's income has no bearing on yours.

Its like a bear saying "I don't want that bee-hive anyway" that it cant reach.But I am NOT one of those people.